From: Philip Craig <philipc@snapgear.com>
To: netfilter-devel@vger.kernel.org
Subject: conntrack untracked match is broken
Date: Mon, 22 Jun 2009 16:31:35 +1000 [thread overview]
Message-ID: <4A3F2547.30301@snapgear.com> (raw)
# iptables -I INPUT -m conntrack --ctstate UNTRACKED
# iptables -L INPUT
Chain INPUT (policy DROP)
target prot opt source destination
all -- anywhere anywhere ctstate
(ctstate isn't matching anything.)
The problem is that state_mask in 'struct xt_conntrack_mtinfo1' is
only 8 bit, but XT_CONNTRACK_STATE_UNTRACKED == 256.
Unfortunately, gcc doesn't warn about this for '|=', only for '='.
A workaround is to use -m state --state UNTRACKED
Looks like we need a conntrack match v2 to fix this?
next reply other threads:[~2009-06-22 6:31 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-22 6:31 Philip Craig [this message]
2009-06-25 16:46 ` conntrack untracked match is broken (kernel patch) Jan Engelhardt
2009-06-25 16:48 ` conntrack untracked match is broken (userspace patch) Jan Engelhardt
2009-06-26 7:45 ` conntrack untracked match is broken (kernel patch) Philip Craig
2009-06-29 12:34 ` Patrick McHardy
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